Evidence map›Paper›PMID 19246456›Full record

ArticleThe Journal of biological chemistry2009

A highly conserved motif within the NH2-terminal coiled-coil domain of angiopoietin-like protein 4 confers its inhibitory effects on lipoprotein lipase by disrupting the enzyme dimerization.

Ming-Hon Yau, Yu Wang, Karen S L Lam, Jialiang Zhang, Donghai Wu, Aimin Xu

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
4.6field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

58 citing papers in PubMed, 116 citations in OpenAlex.

  1. MAnimals : an open access journal from MDPI · 2026
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  16. Regulation of lipoprotein metabolism by ANGPTL3, ANGPTL4, and ANGPTL8.American journal of physiology. Endocrinology and metabolism · 2021
    Review
  17. Article
  18. ANGPLT3 in cardio-metabolic disorders.Molecular biology reports · 2021
    Review
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Ming-Hon YauDepartment of Medicine, Research Centre of Heart, Brain, Hormone and Healthy Aging, and Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong.
Yu Wang
Karen S L Lam
Jialiang Zhang
Donghai Wu
Aimin Xu
University of Hong Kong · HKGuangzhou Institutes of Biomedicine and Health · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lipoprotein lipase (LPL) is a principal enzyme responsible for the clearance of chylomicrons and very low density lipoproteins from the bloodstream. Two members of the Angptl (angiopoietin-like protein) family, namely Angptl3 and Angptl4, have been shown to inhibit LPL activity in vitro and in vivo. Here, we further investigated the structural basis underlying the LPL inhibition by Angptl3 and Angptl4. By multiple sequence alignment analysis, we have identified a highly conserved 12-amino acid consensus motif that is present within the coiled-coil domain (CCD) of both Angptl3 and Angptl4, but not other members of the Angptl family. Substitution of the three polar amino acid residues (His(46), Gln(50), and Gln(53)) within this motif with alanine abolishes the inhibitory effect of Angptl4 on LPL in vitro and also abrogates the ability of Angptl4 to elevate plasma triglyceride levels in mice. The CCD of Angptl4 interacts with LPL and converts the catalytically active dimers of LPL to its inactive monomers, whereas the mutant protein with the three polar amino acids being replaced by alanine loses such a property. Furthermore, a synthetic peptide consisting of the 12-amino acid consensus motif is sufficient to inhibit LPL activity, although the potency is much lower than the recombinant CCD of Angptl4. In summary, our data suggest that the 12-amino acid consensus motif within the CCD of Angptl4, especially the three polar residues within this motif, is responsible for its interaction with and inhibition of LPL by blocking the enzyme dimerization.

Indexed as

3T3-L1 CellsAmino Acid MotifsAmino Acid SubstitutionAngiopoietin-Like Protein 3Angiopoietin-Like Protein 4Angiopoietin-like ProteinsAngiopoietinsAnimalsDimerizationEnzyme InhibitorsHumansLipoprotein LipaseMiceMutationPeptide MappingProtein Structure, TertiaryAngiopoietin-Like Protein 3Angiopoietin-Like Protein 4Angiopoietin-like ProteinsAngiopoietinsANGPTL3 protein, humanAngptl3 protein, mouseANGPTL4 protein, humanAngptl4 protein, mouseEnzyme InhibitorsLipoprotein Lipase

Identifiers

PMID19246456
PMCPMC2673263
OpenAlexW2088403686

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.